In The Solar House I borrowed David Gissen's excellent concept of the ‘thermal ghetto’ to briefly discuss an issue in public housing that Fred Keck addressed beginning in 1950. Gissen coined this term to discuss how low-income urban dwellers usually lack access to air-conditioning and disproportionately suffer heat-related deaths.*

Another type of ‘thermal ghetto’ is often produced in multifamily housing projects: when the building is extended east-west for proper orientation and a double-loaded corridor is used, half the residents are banished to a ‘thermal ghetto’ on the north, where they rarely see direct sunlight and the units are cold and dark, with high heating bills. This was a common condition through the 20th century. Keck wanted to avoid this type of ‘thermal ghetto’ when he designed the Prairie Avenue Courts, a superblock-type public housing project. Keck wanted all of the the units to face south, so he needed to fight for a single-loaded corridor plan. Keck developed a few solutions, the best of which is shown below. In effect he treated the project like a large solar house (shading devices on the south façade are not shown).